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How to include loss caused by surface roughness (along propagation) in waveguide mode analysis using RF module?
Posted Mar 15, 2022, 6:37 a.m. EDT RF & Microwave Engineering, Modeling Tools & Definitions Version 5.6 1 Reply
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Hi, recently i was analysing the waveguide mode using RF module in COMSOL. The waveguide was circular metallic waveguides. Theoretically for ideal smooth metal surface, the mode transmission loss is very low. But as one could know, the surface roughness of the metal along the propagation direction will cause significant loss. ** **My question is, how to include this loss during the mode analysis? The surface roughness in the TBC (transition boundary condition) defines the roughness in the axial direction, instead of along the propagation direction. Thank you.
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Dear Zhai,
Thank you for your message! I'll connect with you as soon as possible.Could you like discuss with us about your research?
Boqian Liang
COMSOL China